Centrifugal separator.



Patented July 22, I902.

C. FRIESLEBEN. CENTBIFUGAL SEPARATOR.

(Application filed Aug. 2, 1901.)

(No Model.)

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IUIII IIIIIII jnvenfm" fly a s ai'il'arizeyy we mmms vzrzns cc Pn 1), is driven by means of gear-wheels m '11 from NITJEU stratus} CARL FRIESLEBEN, OF HALL'E, GERMANY.

CENTREFUGAL SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 705,066, dated July 22, 1 902.

Application iilcd August 2,1901.

1'0 (ti/Z whom it may concern:

Be it known that I, CARL FBIESLEBEN, a subject of the Emperor of Germany, residing at 18 KirchnerstrasseJIalle-on-theSaale, Germany, have invented certain new and useful Improvements in Centrifugal Separators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a continuous-working centrifugal separator for separating soda, spent grain, and the like, in which the material being operated upon is exposed to the centrifugal action for a certain constant interval of time and after having been separated is led to a side outlet.

The accompanying drawing is a sectional elevation of a centrifugal separator constructed according to this invention.

Inside the perforated drum a, which is of smaller diameter at the top than at the bottom, an uninterrupted spiral s is mounted, thus converting the interior of the drum into a helically-shaped passage, so that the material being separated is retained for a longer or shorter period in the drum, according to the speed at which it is made to rotate, and when the charged centrifugal is suddenly stopped that material which has not been separated or has been only partly separated is prevented from falling down into the material which has already been thoroughly operated upon. The spiral s is mounted on or is integral with the vertical shaft 6, working in bearings o and resting on steps 6, while the drum on is mounted on the shaft 1), working in bearings f and rests on steps Zin the end of the shaft 1). The drum a, or rather its shaft the shaft 6, from which also the spiral 3 re ceives its motion through the medium of the gear-wheels r r and shaft 1). The shaft 25 works in bearings o and is supported on the foot-step w, as shown. The cover or end of the drum is made with an annular conical de pression 1/, which is covered in by means of a cap a, coned in an opposite direction and open at the top. A chamber is thus formed between the cap a and the invert-conical cover y above the drum a, into which the material to be separated is fed and from whence it enters the drum through the openings 2'. As the depression is wider at its top, the material has a tendency to mount up its in- Serial. No. 70,664. (No model.)

clined sides, but is prevented from escaping by the cap a and is thus compelled to find its way in a horizontal direction through the openings 2' into the upper part of the drum a, so that the material is always subjected to the centrifugal action for an equal period of time in the drum, and a thorough. and efficient separation is effected. Instead of the comparatively small passages 11 large openings may be provided in the depression y of the cover, in which case they must be covered with network. The material introduced in this way into the drum is now caused to descend slowly by the motion of the spiral, which nearly touches the sides of the drum, whereby the material remaining in the drum is finally caused to drop down into a ring-shaped dish d, arranged under the drum-opening.

Between the drum a and the collecting-dish d a wheel g is mounted to turn on the spiral shaft 7) and gears with a pinion h, keyed fast onto the driving shaft t. The spokes of this wheel g carry scraper-blades 7a, which dip down into the collecting-dish d. These blades 7e when rotating with the wheel 9 convey the separated material which has fallen to the outlet-chute 0. The separated liquid passes through the perforations in the drum ct into the casing 00, whence it is collected through any suitable opening in the same.

-What Iclaim, and desire to secure by Letters Patent; is-

A continuous-working centrifugal separa tor, consisting of a conical drum, rotated from the top, a conical filling-chamber on the top of the drum and communicating with the interior through openings, a spiral conveyor mounted vertically in the drum and adapted to convey the material to be separated from the top to the bottom of the same, a means for rotating the conveyor from the bottom, a collecting-dish for receiving the separated material as it falls from the conveyor, and. provided with a chute, and a wheel with de' pending blades mounted above the collecting dish and adapted to be rotated to force the separated materialdown the chute substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

CARL FRIESLEBENi 

